package com.mzy.datepackage.M2021.Dec.Second;

import java.text.DecimalFormat;

/**
 * @author Ives
 * * @date 2021/11/2
 */

public class Demo {

  public static void main(String[] args) {
    Integer serialNumber=654654054;
    DecimalFormat df = new DecimalFormat("000");
    String serialNumberStr = df.format(serialNumber);
    System.out.println(serialNumberStr);
  }
}
